Mojo bindings environment: remove usage in gles2.

mojo/public/platform/native/gles2_thunks.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_PUBLIC_PLATFORM_NATIVE_GLES2_THUNKS_H_
 #define MOJO_PUBLIC_PLATFORM_NATIVE_GLES2_THUNKS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "mojo/public/c/gles2/gles2.h"
 
 // Structure used to bind the interface which manipulates GLES2 surfaces to a
 // DSO to theose of the embedder.
 //
 // This is the ABI between the embedder and the DSO. It can only have new
 // functions added to the end. No other changes are supported.
 #pragma pack(push, 8)
 struct MojoGLES2ControlThunks {
   size_t size;  // Should be set to sizeof(MojoGLES2ControlThunks).
 
   MojoGLES2Context (*GLES2CreateContext)(MojoHandle handle,
                                          const int32_t* attrib_list,
                                          MojoGLES2ContextLost lost_callback,
-                                         void* closure,
-                                         const MojoAsyncWaiter* async_waiter);
+                                         void* closure);
   void (*GLES2DestroyContext)(MojoGLES2Context context);
   void (*GLES2MakeCurrent)(MojoGLES2Context context);
   void (*GLES2SwapBuffers)();
 
   // TODO(piman): We shouldn't have to leak this interface, especially in a
   // type-unsafe way.
   void* (*GLES2GetGLES2Interface)(MojoGLES2Context context);
 };
 #pragma pack(pop)
 
@@ skipping 16 matching lines @@
 // a DSO linked with mojo_system. For example:
 // MojoSetGLES2ControlThunksFn mojo_set_gles2_control_thunks_fn =
 //     reinterpret_cast<MojoSetGLES2ControlThunksFn>(
 //         app_library.GetFunctionPointer("MojoSetGLES2ControlThunks"));
 // The expected size of |gles2_control_thunks| is returned.
 // The contents of |gles2_control_thunks| are copied.
 typedef size_t (*MojoSetGLES2ControlThunksFn)(
     const MojoGLES2ControlThunks* gles2_control_thunks);
 
 #endif  // MOJO_PUBLIC_PLATFORM_NATIVE_GLES2_THUNKS_H_